Perhaps the external drive will hide the downloaded files, but Windows Registry has the remnants of the filesharing programs.
Not if you run Evidence Eliminator Safe Shutdown.
I don't have a Registry. Am I safe?
Run it from a virtual machine off of an encrypted external drive. There will be absolutely no trace of it on your system.
But as far as I know, it's not illegal to possess or to have possessed at some time in the past, file sharing programs. Only if you use them to share or to receive copyrighted material is there injury.
Besides, like some of the other posts have mentioned, you could put the file sharing program in a VM on this removable disk.
External HD and the Usenet. No file sharing program needed.
So, is having filesharing programs evidenc of a crime? I thought there were legitimate uses for filesharing? There are many musicians who give away files. Are you saying it's still illegal to download them?